Potamonautes unisulcatus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Malacostraca Decapoda Potamonautidae

Scientific Name: Potamonautes unisulcatus (Rathbun, 1921)
Taxonomic Notes: Bott (1955) treated this species as Potamonautes (Potamonautes) johnstoni unisulcatus. Reed and Cumberlidge (2006) recognised this taxon as the valid species Potamonautes unisulcatus.

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(i,ii,iii); D2 ver 3.1
Year Published: 2008
Date Assessed: 2008-01-01
Assessor(s): Cumberlidge, N.
Reviewer(s): Crandall, K. and Daniels, S. and McIvor, A.
This species is listed as Vulnerable because its extent of occurrence is restricted (less than 20,000 km²), its distribution is fragmented, and because there is a continuing decline in the extent and quality of its habitat due to human induced degradation driven by human population increases and industrial and agrarian development. It is only known from three localities and it is not found in a protected area. Population size (based on low representation in museum collections and no recent additional material) is estimated to be greater than 250 but fewer than 2,500 mature individuals over the entire range. A continuing decline in the extent of occurrence is inferred from the fact that P. unisulcatus has been known to scientists for more than 60 years and yet still has only a poor representation in museum collections, and it has not been collected recently (in the past 30 years). It is not found in a protected area.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Tanzania:The type locality is Bagilo, in the Uluguru Mountains in Tanzania.
Countries occurrence:
Tanzania, United Republic of
Additional data:
Number of Locations:3
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:It is difficult to estimate the population status and trends of this species but its population is estimated to be declining based on indirect factors such as the lack of recent specimens, its poor representation in museum collections and increasing habitat disturbance from deforestation associated with growing human populations in the region.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species is endemic to the forested slopes of the Uluguru Mountains of Tanzania.

Threats [top]

Major Threat(s): Habitat loss and pollution. Increasing habitat disturbance from deforestation associated with growing human populations in the region.

Conservation Actions [top]

Conservation Actions: No conservation measures are known to be in place for this species and it is not found in a protected area.

Citation: Cumberlidge, N. 2008. Potamonautes unisulcatus. The IUCN Red List of Threatened Species 2008: e.T44541A10917400. . Downloaded on 24 May 2018.
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